RJ Machine is a leading manufacturer of valve replacement parts, orifice plates, flow conditoners and seal rings. We has been ... producing quality machine work for over 30 years, specializing in replacement parts for Daniel Senior* Orifice Fittings. RJ Machine manufactures parts sizes 2" through 24" in Carbon Steel and also Stainless Steel. We maintain a large inventory on all of our replacement parts. Our staff is service-friendly and in most cases, we can ship your order the same day. Customer service is our number one priority! RJ Machine has recently added some new products to our line. We will now be offering a complete line of Universal and Paddle Orifice Plates. These plates are manufactured from 316 Stainless Steel and will all be circle polished. Additionally, the Paddle Plates are manufactured from a solid piece of steel, there are no welded handles. read more